21 Aug
2015
21 Aug
'15
11:13 a.m.
Hi,
On Fri, Aug 21, 2015 at 11:54:52AM -0400, Noel Chiappa wrote:
I picked up a bunch of the boards too. My results have been mixed, but
for the price and description, I expected some wouldn't work.
1x M8028 - DLV11-F SLU works.
1x Plessey 32kW memory, works.
2x M8186-YA - KDF11-AA, works.
4x M8192 - KDJ11 (AA or AB?) -- two work, two fail POST, with LEDs lit.
4x MMS1132-N3-128 Motorola 128kW memory - undetermined if works.
1x MMS1102-34 Motorola 32kW memory - undetermined if works.
I haven't figured out the jumpers on the Motorola memory boards yet.
As provided, if I plug one in with the KDF11-AA, I fail to even get
an ODT prompt.
I picked up a chassis with bridged 2x8 and 2x12 Qbus backplanes in it
at a hamfest (with a good KDF11-AA and 4xM8044s), so my goal is to
make a pair of small working 11/23 or 11/73 systems. So far, I've got
PDP11GUI successfully running memory tests using microODT via the SLU and
a Windows PC, enough to test out the hardware as per above.
1) I was hoping I could boot XXDP or RT11 from an RX33/RQDX3. The RX33/RQDX3
works in my 11/53, but so far I'm not having much luck with the KDF11 above.
I picked up a M9058 RQDX3 signal distribution board on e-bay from seller efi
(he has one more listed). It's only got one jumper on it, labelled RX50,
which I have in the non-RX50 position. Since none of this has a bootstrap,
I run the bootstrap from ROM provided by a Dilog SCSI card here, but typing
"DU" or "DU0" at the * prompt spins the floppy ever-so-briefly, then
kicks
out an error about no boot media found. Suggestions? Maybe I should try
other bootstrap?
2) I could use PDP11GUI, or other tools to load XXDP via the SLU. If anyone
has already done this and wants to talk to me about it, I welcome some help.
I'm a little confused about what should work and what should not work, with
just the 18 bit qbus. Do I need to wire wrap the additional address lines
to be able to do anything with these KDJ11 CPUs? Does anyone have good
instructions for this modification -- I'll probably want to do it. Do I just
add the additional address lines, or are there other considerations?
Mark
--
Mark G. Thomas (Mark at Misty.com), KC3DRE
From: Ethan
Dicks
That looks like a great haul.
We're talking about the guy on eBay whom I posted a pointer to a couple of
days back, the one with large lots of QBUS CPUs, memory, DLV11s, etc?
I hope they are working cards.
All the ones I've gotten from the guy above which I was able to test (couldn't
test, e.g. the RK05 cards 'cause I don't have a working RK05 yet) were OK -
QBUS memory, 11/23's, etc.